Back to premium
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Race Director
Joined: Sep 2003
Posts: 16,836
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From: Database Error Indiana
Back to premium
After 3 years of using E85 in the 87 I switched back to premium. Reason is, its not available everywhere. Nearest pump is 6 miles away. Sometimes it cheaper to use. Sometimes premium is cheaper. Gas prices are crazy unpredictable. Anyway I like using it since its almost impossible to get spark knock with e85 in the tank. I could give the car a ton of spark advance. Good for gas mileage and bottom end torque. Not so good for traction. So its back to premium until the E85 is more available or a lot cheaper. Then its just a chip change and I can go back if I want.
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Race Director
Joined: Sep 2003
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From: Database Error Indiana
Its not the same pump to pump. Not enough difference that it matters. I have a ZZ4. Miniram and aftermarket 180 heads. Its clean burning, I have about 30k miles on my sparkplugs and last time I looked they were very clean. Oil doesnt turn black. I do like it but its currently not worth the inconvenience. I can get 93 premium 2 blocks from home.
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Race Director
Joined: Sep 2003
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From: Database Error Indiana
Safety Car
Joined: Mar 2005
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From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
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Thread Starter
Race Director
Joined: Sep 2003
Posts: 16,836
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From: Database Error Indiana
My 24# injectors were near maxing the duty cycle so I replaced them with bigger ones. I ran it several months with 24s though, no problem. I replaced the stock fuel lines under the hood with teflon core braided lines. Just didnt trust 23 year old stock ones. The stock rubber lines are still in use at the tank. The rest is in the tune.
Race Director
Joined: Jun 2004
Posts: 13,943
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From: WI
I switched mine as well it's more octane for less cost! Have you thought of ordering a barrel? Or get some barrels and fill them up, use as needed. Just don't let them sit to long. I got a fuel tester from Summit it easily shows the E%.
Gary I just used injectors that flow more then did some computer tuning. A lot more fuel is used but it costs less. It's very clean!
Gary I just used injectors that flow more then did some computer tuning. A lot more fuel is used but it costs less. It's very clean!
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Drifting
Joined: May 2012
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From: Mechanicsburg PA
Central PA Events Coordinator
St. Jude Donor '12-'13
E85 is only recommended for Flex fuel vehicles from 2012 and newer.
E15 - only recommended for 2001 and newer vehicles.
E85 (85% ethanol) was never recommended for our model years.
Now AAA is warning that using E15 will void manufacturer's warranty for cars OLDER than 2012 (does not apply for our years).
http://video.foxbusiness.com/v/2000862202001/
Looks like the govt. is 'poisoning the well' again.
E15 - only recommended for 2001 and newer vehicles.
E85 (85% ethanol) was never recommended for our model years.
Now AAA is warning that using E15 will void manufacturer's warranty for cars OLDER than 2012 (does not apply for our years).
http://video.foxbusiness.com/v/2000862202001/
Looks like the govt. is 'poisoning the well' again.
Last edited by Bandit's C4; Dec 29, 2012 at 06:20 PM.
Race Director
Joined: Nov 2003
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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Build an external "port" for microchips with dual, switchable slots. Flip the switch for whichever fuel you're running!
It could make millions!
Looking forward to seeing you on "Shark Tank"!
It could make millions!
Looking forward to seeing you on "Shark Tank"!
Le Mans Master
Joined: Apr 2000
Posts: 5,713
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From: Manassas VA
Jack, as we speak, I have mine at a tuner now, hoping to be able to clean it up enough to pass emissions. I now have a 385 232-236 cam and 11.25 compression. Hope he can do it. Then I am going to switch back to the premium gas. He is burning 2 chips for me so I can switch back. BTW there is one e85 station in my area and its 20 or so miles away.
Thread Starter
Race Director
Joined: Sep 2003
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From: Database Error Indiana
93 rag, we dont do smog here but it would be fun to see how the numbers look. My datalog numbers indicate a good burn. I am going to miss the sweet alky smell on cold mornings. I hate that smell with gas. Good luck at the smog check.
Thread Starter
Race Director
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From: Database Error Indiana
Safety Car
Joined: Mar 2005
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From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
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Race Director
Joined: Jun 2004
Posts: 13,943
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From: WI
Alky is just bad if you binge on it! I haven't had any trouble, I did remember I do have an upgraded fuel pump. It's a Walbro 190 and before I had the 46 pound injectors I had some 32's that I ran very increased fuel pressure to get enough flow.
If you need help tuning let me know. Brian (bjankuski) also lives near to you and does tuning/dyno tunes.
If you need help tuning let me know. Brian (bjankuski) also lives near to you and does tuning/dyno tunes.
Race Director
Joined: Nov 2003
Posts: 12,220
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
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